maven tomcat7 redeploy lost file compared with the war file - maven-2

Question

I am using maven and tomcat7 to develop web project,but I found a weird problem:the redeployed project lost some files compared with the war file,thus I can not run the project after it redeployed.
Let me say it step by step:
This is the project structure of my maven project:
This is my configuration code of the pom.xml file:
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.lucumt</groupId>
<artifactId>vm</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>vm</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-tools</artifactId>
<version>2.0</version>
</dependency>
</dependencies>
<build>
<finalName>vm</finalName>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<url>http://localhost:8085/manager/text</url>
<server>tm7</server>
<path>/vm</path>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
when I run tomcat7:deploy in eclipse using m2eclipse when tomcat7 is running,the project is packaged as vm.war and it will deployed in webapps folder for tomcat7,the file in vm folder will look like this,and I can run my project now:
But when I run tomcat7:redeploy,the file in the vm folder will look like below,the jsp and velocity file is missing and thus I can not run this project using tomcat again!
However,when I checked the vm.war file using WinRA,I found everything is okay,the jsp and velocity files are inside as below:
I think the files are missing when tomcat make the vm.war file in to vm,but I do not know why it happend,and I do not know how to solve it,can anyone help me? Is there is wrong configuration in my pom.xml file?
Thanks in advance!